Number of Songs Total Cost 14 $9.10 16 $10.40 19 $12.35 What is the constant of proportionality between the total cost and the number of songs?

the answer is d. (1.2, -4.7) on edgn

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step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

sine

step-by-step explanation:

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2